David,interesting question,let me sum it up this way for you,MRP equals TripleClicks at this market you can use your MRP for substitute of cash to purchase items you need to have,TCredits for Auction bidding which is a good way to use it,you can truly make use of MRP THIS way,it MRP=products,MRP=items,MRP= Auction bidding by acquiring TCredits,MRP=TripleClicks,to your success.